Tire mounting and dismounting device



r 1,637,815 Aug. 2,1927. H G' GILES TIRE MOUNTING AND DISMOUNTING DEVICE 2 Sheets-Sheet 1 Aus. 2. 1927.v

H. G. GILES TIRE MOUNTING AND DIsNouNTING DEVICE Filed oct. 19. 1,926

'2 Sheets-Sheet 2 fiar/1 eZ".

Patented ug. 2, 1927.

HENRY `G. GILS, OlEl PITTSBURGH, PENNSYLVANIA, ASSIGNOR OF ONE-HALF T0 WILLIAM I-I. MCFARLAND, OF PITTSBURGH, PENNSYLVANIA.

TIRE MOUNTING AND DISMOUNTING DEl'ICE.

Application filed October 19,1926. Serial No. 142,593.

This invention relates to tirev mounting and dismounting devices adapted especially for pneumatic tires mounted on so-called split-rims.

This application is directed to cover certain improvements over similar devices disclosed by me in a prior application for Letters Patent bearing the Serial Number 57,564

and filed September 21, 1925.

One of the main objects of this invention is to provide a tire mounting and dismounting device which is adapted for use on all commercial split-rims now in use. Another object is to provide such a device which is adapted to lift one end of a split-rim above the other end prior to overlapping said ends for the purpose of constricting the rim a sufficient amountto enable the mounting or dismounting of a tire on said rim with ease and speed. A further object is to provide a device which is relatively small and light and which, therefore, is well suited to be' carried as part of the tool equipment of every automobile. Yet another object of this invention is the provision of `a device which is simple in application and which is self-locking when the tire rim is constricted to its full required amount. Additional features and advantages of this invention willy appear from the following ydescription con-v sidered in connection with the accompanying drawings forming a part of this application.

In the drawings yFig.,1 is a perspective view showingA the application of my improved device on a cerf vtain commercial type of split-rim.

Fig. 2 is a perspective view showing my device in an inverted position.

Fig. 3 is a front elevation of the so-called hook-link used in my device. l

Fig. 4 is a side elevation of Fig. 3.v

Fig. 5 is a fragmentary view of a rim prol vided with a special hitch-pin to'which my device may be attached. 4

Fig. 6 is a perspective view of an anchor designed'to cooperate with a rim of the modified type'shown in Fig. 5.

Fig. 7 is a side` elevation of Fig. 94s asimilar view, but showing my` ai@ hach-Tink. also used in connectionwith the rim shown device provided with a set of universal riniclamps.`

' Fig. 10'is a front elevation of one of the two universal rim-clamps used in Fig. 9.

Figs. 11 and 12 are respectively the side` elevation andthe top view of the hitch-block used on one of the universal rim-clamps.v

Figs. 13 and 14 represent the side elevation and `the end-view ofthe hitch-link used on the other universal rim-clamp.,

` Fig. 15 shows the position .taken by,` the ydevice after thefconstricted en'd of the rim has been released and returned, by its own elasticity, nearly into normal position.

Fig. 16 is a side-elevation of the operating i vlever, showing especially the cam-shaped form of the foot of said lever. y

VReference being had to Fig. 1, on the substantially stationary rim end 1 there is pro* vided a special hitch 2,v and on the movable rim end 3 there is added to the usual `rimlock 4 another hitch 5. yThe tire mounting and dismounting deviceillustrated in this figure comprises an anchor Shaving a hitchlug V7 and a rectangularly disposed tab 8.

This hitch-lug is adapted to fit snugly within the rectangular slot 9 provided in the hitch 2 and, to insure a better engagement of the lug into said slot, the former is preferably provi-ded on two .sides with sharp teeth or corrugations 10.y

l-Iingedly connected to the tab 8 by means of the bolt 11 is the draw-bar 12 consisting of straps 13 .suitably bent to assume the shape .shown in the drawing. At the free ends of the draw-bar are cutoblong slots 14 which are engaged by the pivot-bolts v15 upon which is rocliablymounted the operat! ing-lever 16.v The latter is composed of ay suitably shaped handle 17 and of the -two Vcurved legs 18 at the feet of which the pivot- `bolts 15 are solidly fastened. Asshown in Fio. 16 especially, these feety are cam-shaped and the distance of the heel 64from the center of the pivot-bolt is determined by the amount of straight lift desired at the movable end *of the rim.

Adjacent the bend formed by` the handle and thelegs there'is passed a. bolt 19 which acts as apivot for the so-'called hook-link 20. i whichV is lpreferably made of two similar `pieces of metal eachof which is provided with an integral hook 21.'Y vHingedly coni nected to the hook-link by means of thebolt 22 is the hitch-link 23 having` at its tree end the rectangularly disposed lug,` Sill which is adapted to lit snugly in the rectangular aperture cut in the extension of the rinilocke. Sharp teeth or corrugations 26 are also `Jrovided attivo sides ol said luv' to prevent any accidental slipping thereoii In the modified construction illustrated in F ig. 8 and detailed in Figs. 5 to 7, the riin has been provided at each end with special" hitch-pins 2T which are riveted to therini and which "comprise a square or rectangular shank 28 and the head 29. u Figs. G'fand, the anchor 3D and the hitclr linl'` el` have been provided with T-.f-haiped :,openfslots 32 `and S3 respectively which are date the various types of split-rims niet` With in the business.' Vfolovercome this inconvenience. I have also devised a univer-il device Which dilifers freni theories already describedv only in the means used for ada/ch`- ingi-t tothe riins to be constricted.

By referring'to Fig. 9, it will be noted that ythisinodiied device is removably ,secured to both ends ol a split-riin by ineano of thetivo identical clamping devices Seil and 35, Which are respectively clamped on the stationary riln-"end 36 andvon the movable rim-end 3T.

Eacli universal claniliing` device consists of tivo parallel and identical-juvv-ineinbers BSupon thelower ends oi which have been niaclriired the corrugated surii'aces y vvhiclr thelist oiitsid'e `portions of the rini- .flanges fr0* are gripped, and the grooves ell vvhiclr are adapted to freely receive the beaded portions 42 oteaid riin-flanliges. Thee jawineinbers are clamped :tightly aga-'ins fth'e* l'lzing'es of the rire bj? nie ns of a spindle 43 npo'irivhich are cnt the left threads lil andthehripght threads 45 which engagey accordingly threaded hol @o and el?? drilled in the gawfjn'iein'berd ill handle Sie also; placed at one end of the spindle to enable the rotation thereof .and the cnnsequent travel in opposite' directions ofthe jaivjieinbers.- Thelatter are maintained in the" proper, juid;ap'osed,` p sition'` by ineens et@ guide-rod f Theclainfjilngj device carries 'the hitchbloclrfO which comprises abody portion 5l Hindi attachment :la the .hc-fly As shown in y lows the cl eratirff con'str'icted: irat'il the Operatingvlever decir portion are drilled the apertures 53 and 54 which are respectively engaged by the rotatable spindle #l and the lguide-rod 49. The hitch-block is held centrally on the spindle by means of collars- 55 secured on said spindle in any desired inannerpsuch" by the pins 56. Un theother hand, the guideerod is `kept troni moving longitudinally by ineans o1" a pin 57 driven through the body portion 51 and the guide-rod` ln the attachment lug` is the hole 58 in which is inscrtedfthc bolt ll of the dlaW-ba'r On the clamping device 35 is" rn'oulntedl the hitch-bar 59 which consists" of the body por tion ,60 and the arni 614. The body portion is; drilled for secar-"ement oir thelspindle 43 arin' isl drilled the hole 62 inf Whichis in"- serted the bolt 22" which pivotally connects `said hitch-bar to the hook-link 20.

` On `each of the hitch-links described above, there is `.secured theI hook-pin 63 i'vh'i'ch extends on both sides of said links and which lis properly located' to" lit infthe socket` or thehool; 2l, when the tire mounting* and disinountingdevice assumes ythe po'- sition shown in Fig. l5. i i i Based" en the above description,the application and 'operation of iny device -will `and the guide-rod l19in an identical nianner as the hitclrblocl. Adjacent the end of the be readily7 coinprelrended by those versed in l 1 the art and may be briefly expldined-as r'olrrssinniu'g, 'for instance, that the device he otl the type adapted toY accommodate the is to be removed for reneival jor repair,.the

following inustf be' done: The riln and the tire are first removed fronr the vvheel `and Ithe riin-lockl is Vopened Vin the. usual `man ner. The rectangular lugs on theranchor 6 1 *rind the hrtclrlinl 23 are jinsertedfrn the slots of their corresponding hitchcs, sothat `v `vlever 16 Will lie partlyover rim-end: It `will. be. noted-"also `the movable i that the pivot-bblts l5r of the operatingllever occupy the extreme left end of theslots"V let in the draw-bar 12, as shown `inl particular in Fig. l5. The 'operator now` rotates the 'lever countercloclwisewith the result' that the end of the hitch-linln` the movable in-endyare lifted up;` This motion of the operating-lever would also have the -V tendency to inovethe` rim-end to the left and ccnstrict it, but the resistanceito bending` of Vthe latter causes the,pivotebolts to" lnov'e to the extreine right of the slots lljistead-.qs-o

that, for theiti-ine being,tfhe inovablehrinr end is not constricted, butonly liftecllfifigh enough to clear the stationary rinifend l, Any further counterclockvvise `rotation of the cperatingelever new occurs with' the pivot-bolts bearing, against the ridht ends of the slots le so that the fini isgrrduelly Ie ol: rini shown in Fig. l and thata ire itis pies the position illustrated in Fig. 8. As shown therein, the pivot-bolts lie well above the imaginary line passing through the centers of the hinge-bolts 19 and 22 and, for that reason, the whole device is locked automatically, regardless o1 the pull exerted by the constricted portion of the tire-rim. This constricted condition permits of the easy removal o'll the old tire and the application or'. a new one.

After the new tire has been placed on the rim, the operating-lever is lifted outof its self-locking position, and the elasticity of the constricted Vrim portion will cause the latter to open up and assume nearly its normal position. I-Iowever, the presence of the tire on the rim does not allow the full return of the constricted rim portion, the latter will be stopped a short distance inward from the end oltv the stationary rim portion, substantially as shown in Fig. 15.

In order to place the end of the movable rim portion in its final position, it is necessary to exert pressure on .the operatinglever in a clockwise sense. This brings the sockets of vthe hooks 21 to bear upon the hook-pin 63 sothat the hook-link and the hitch-link are substantially rigidly connected. The pivot-bolts are now at the extreme left of the slots 14 and any pres-v sure imposed on the operating-lever will act in a greatly multiplied intensity upon the movable portion of the rim and force the latter into iinal position.

As will be understood 'from the above description, the amount of direct vertical lift of the en d of the movable rim-half is determined by the length of the slots 14 and by the lift of the cam-shaped foot of the operating-lever. Also, the total constriction of the rim is governed by the direct distance between the centers of the pivot-bolts 1 5 and th-e hinge-boltl 19.

Apart from the manner of applying the modiiied constructions shown in Figs. Sand 9, their operation is substantially the same as stated above, and for that reason, further comment on the subject isnot thought necessary.

While I have illustrated and described various embodiments of my invention which I have found by actual use tovbe very practical, it may be thought desirable aftercontinued experience to make slight changes in the construction and arrangement ofthe details of my invention, and I intend to include inthis application all such changes as fall within the scope of the .appended claims.

1. In a device for mounting and .dis-

mounting a. tire on or 0E a split-rim, an anchor adapted for secu-rement to a hitch v positioned ion one end of said rim;l a hitchlink adapted to be secured on another hitch vpositioned on the` other end of saidsplitrim; a draw-bar hingedly connected to said anchor; an operating-lever hingedly mounted on said draw-bar; a hook-link pivotally mounted on said operating-lever, and means for hingedly connecting said hook-link to said hitch-link.

2. In a device for mounting and dismount-v sov ably connecting said operating-lever to said draw-bar; a hook-link pivot-ally mounted on said operating-lever; hooks positioned on said hook-link and adapted to be engaged by said hook-pin, and means for hingedly' connecting said hook-link tosaid hitch-link.

In a device for mounting `'and dismounting a tire on or ofi' a split-rim, an anchor adaptedfor securement to a hitch positioned on one end of said rim; a hitchlink adapted to be secured on another hitch positioned on the other end of said splitrim; a Vdraw-bar hingedly connected tosaid anchor, said draw-bar consisting of two straps having oblong slots at the free ends Y thereof; an operating-lever domprising a handle and a pair of curved legs each having a cam-shaped foot; pivot-bolts secured eccentrically in the feet of the operating-- lever and engaging the slots in the drawbar; a hook-linkpivotally mounted on said operating-lever, and means for hingedly connecting said hook-link to said hitch-link.

4. In a device for mounting and dismounting a tire on or oft' a split-rim, an anchor;

adapted for securement to a hitch positioned on one end of said rim; a hitch-link-adapted to be. securedk on another `hitch positioned. on'the other end-,of said split-rim; a draw- Vbar hingedly connected to said anchor; said draw-bar comprising two straps havingy oblong slotsV at the 'free ends thereof; an operating-lever comprisingia handle and a pair of curved legs each having aV camshaped foot; pivot-bolts secured eccentrically in the feet of theV operating-lever and,l i

i. engaging the slotsin said draw-bar ;-a hookpin positioned on said hitch-link; a hookli'nk mounted pivotally on said operatinglever; hookspositioned on said hook-link y and adapted to be engaged by said hook-pin,

and means for hingedly connecting said In testimonywhereofI alii):y my signa-f125 Y `hook-'link tov said hitch-link.

ture.

HENRY G.' Gines.` 

